JP6700819B2 - Component mounter - Google Patents

Description

  The present specification relates to a component mounter in which a component mounter is housed in a casing. In particular, the present invention relates to a component mounter having a lock mechanism that can lock an opening/closing door that opens and closes an opening of a casing in a closed state.

  In Patent Document 1, a component mounting portion for mounting an electronic component on a substrate, and an openable/closable cover (referred to as an opening/closing door in the present specification) that is in a closed state when the component mounting portion operates or is operable. There is disclosed a component mounter including the. This component mounter is provided with a release switch for releasing the lock mechanism that locks the cover in the closed state, and the cover can be opened by pushing the release switch. When pushing the release switch while the component mounting unit is operating, the cover is opened after the component mounting unit stops. With this component mounter, the component mounter is in a completely stopped state before the lock mechanism is released and the cover is opened, so the safety of the operator can be ensured.

JP-A-7-202489

  By the way, in such a component mounter, even when an abnormality occurs in the component mounter, it is necessary to open the cover to check the internal state of the component mounter and recover from the abnormality. At this time, it may be difficult to identify the cause of the abnormality depending on the type of abnormality, so it is necessary to save the state at the time of the abnormality and perform a detailed investigation. However, in the component mounter of Patent Document 1, anyone can easily open the cover by operating the release switch, so that there is a possibility that an operator repairs the cover and the state at the time of occurrence of an abnormality is not saved. The present specification discloses a component mounter that can appropriately save a state at the time of occurrence of an abnormality when an abnormality occurs.

  A component mounter disclosed in the present specification accommodates a component mounter that mounts an electronic component on a board, an abnormality detector that detects an abnormality of the component mounter, and a component mounter, and access the inside from the outside. A casing having an opening that enables the opening and closing, which is provided in the opening of the casing and is switchable between a closed state for closing the opening and an open state for releasing the opening, and a lock mechanism for locking the opening and closing door in the closed state, An input device for operating the lock mechanism, an abnormality detection unit, a lock mechanism, and a control device connected to the input device are provided. The control device locks the open/close door in the closed state by the lock mechanism in the component mounting state where the electronic component is mounted on the board by the component mounting unit, and the abnormality detection unit detects the specific abnormality in the component mounting state. Then, when the mounting of electronic components on the board by the component mounting unit is stopped, the closed state of the open/close door is kept locked by the lock mechanism, and a specific instruction is input from the input device in the specific abnormality detection state. In addition, it is configured to release the closed state of the opening/closing door by the lock mechanism.

  In the above component mounter, the control device stops the mounting of the electronic component on the substrate and locks the closed state of the opening/closing door by the lock mechanism in the specific abnormality detection state in which the abnormality detection unit detects the specific abnormality. Stay in the state. In this state, when a specific instruction is input from the input device, the control device releases the closed state of the open/close door by the lock mechanism. Therefore, by managing the input device (that is, a person who can input a specific instruction), the state of the component mounter can be reliably saved when a specific abnormality occurs in the component mounter.

3 is a side view schematically showing the configuration of the component mounter of Example 1. FIG. FIG. 3 is a block diagram showing the connection relationship of each part of the component mounter of the first embodiment. FIG. 3 is a diagram showing a flowchart of processing for controlling the lock mechanism by the control device in the component mounter of the first embodiment. FIG. 10 is a diagram showing a flowchart of processing for controlling the lock mechanism by the control device in the component mounter of the second embodiment.

  The main features of the embodiments described below are listed. Note that the technical elements described below are technical elements that are independent of each other, and exhibit technical usefulness alone or in various combinations, and are limited to the combinations described in the claims at the time of application. Not a thing.

(Feature 1) The component mounter disclosed in the present specification may further include a specific abnormality setting unit that is operated by a user and sets a specific abnormality. Further, the control device may be configured to determine whether or not a specific abnormality has occurred in the component mounter based on the detection result of the abnormality detection unit. With such a configuration, it is possible to change the type of the specific abnormality according to the user's request.

(Feature 2) In the component mounter disclosed in the present specification, when the abnormality detected by the abnormality detection unit in a predetermined cycle exceeds a certain frequency, the controller determines that the component mounter has a specific abnormality. It may be configured to determine that it has occurred. With such a configuration, even if an abnormality occurs in the component mounter, mounting of the electronic component on the board by the component mounter is not immediately stopped. Therefore, it is possible to avoid a situation where the component mounter is excessively stopped. On the other hand, when the frequency of occurrence of abnormality increases, the state in which the open/close door is locked in the closed state is maintained, and the component mounter can be maintained in the state when the abnormality occurred.

(Feature 3) In the component mounter disclosed in the present specification, the input device may include an electronic key and a reading device that reads information of the electronic key. Further, the control device may be configured to release the closed state of the open/close door by the lock mechanism when the information of the electronic key is read by the reading device. With such a configuration, by managing the user who can handle the electronic key, it is possible to limit the opening/closing of the opening/closing door to authorized persons.

(Feature 4) The component mounter disclosed in the present specification further includes a signal line that connects the control device and the lock mechanism and inputs a control signal output from the control device to the lock mechanism. By switching the state of the control signal, the lock mechanism may be configured to switch between a locked state in which the open/close door is locked in the closed state and a lock state in which the lock mechanism does not lock the open/close door in the closed state. .. Further, the signal line may be located inside the casing and accessible when the open/close door is open. With such a configuration, since the signal line cannot be accessed when the open/close door is in the closed state, it is possible to prevent the lock state of the open/close door from being unlocked illegally by accessing the signal line.

  Hereinafter, the component mounter 1 according to the first embodiment will be described. The component mounter 1 is a device that mounts the electronic component 4 on the circuit board 2. The component mounter 1 is also called a surface mounter or a chip mounter. Usually, the component mounter 1 is installed together with a solder printer, another component mounter, and a board inspection machine, and constitutes a series of mounting lines.

  As shown in FIGS. 1 and 2, the component mounter 1 includes a component mounter 5, an abnormality detector 6, a casing 7, an opening/closing door 8, a lock mechanism 9, an input device 10, and a specific abnormality setting. The unit 11, the plurality of component feeders 12, the feeder holding unit 14, the operation panel 28, and the control device 30 are provided.

  Each of the plurality of component feeders 12 houses a plurality of electronic components 4. The component feeder 12 is detachably attached to the feeder holding portion 14 and supplies the electronic component 4 to the mounting head 16. The specific configuration of the component feeder 12 is not particularly limited. Each component feeder 12 is, for example, a tape-type feeder that accommodates a plurality of electronic components 4 in the form of a winding tape, a tray-type feeder that accommodates a plurality of electronic components 4 on a tray, or a plurality of electronic components 4 in a container. It may be any of the bulk type feeders that randomly store the.

  The component mounting unit 5 mounts the electronic component 4 on the circuit board 2. The component mounting unit 5 includes a mounting head 16, an imaging unit 20, a moving device 18 that moves the mounting head 16 and the imaging unit 20, and a board conveyor 26.

  The moving device 18 moves the mounting head 16 and the imaging unit 20 between the component feeder 12 and the circuit board 2. The moving device 18 of the present embodiment is an XY robot that moves the moving base 18a in the X and Y directions. The moving device 18 includes a guide rail that guides the moving base 18a, a moving mechanism that moves the moving base 18a along the guide rail, a motor that drives the moving mechanism, and the like. The moving device 18 is arranged above the component feeder 12 and the circuit board 2. The mounting head 16 and the imaging unit 20 are attached to the moving base 18a. The mounting head 16 and the imaging unit 20 are moved by the moving device 18 above the component feeder 12 and above the circuit board 2.

  The mounting head 16 includes a suction nozzle 3 that sucks the electronic component 4. The suction nozzle 3 is attachable to and detachable from the mounting head 16. The suction nozzle 3 is attached to the mounting head 16 so as to be movable in the Z direction (vertical direction in the drawing). The suction nozzle 3 is configured to move up and down by an actuator (not shown) housed in the mounting head 16 and to suck the electronic component 4. To mount the electronic component 4 on the circuit board 2 by the mounting head 16, first, the mounting head 16 is moved to the component suction position by the moving device 18. Next, the suction nozzle 3 is moved downward until the lower surface (suction surface) of the suction nozzle 3 contacts the electronic component 4 housed in the component feeder 12. Then, the electronic component 4 is sucked by the suction nozzle 3 and the suction nozzle 3 is moved upward. Then, the mounting head 16 is moved to the component mounting position by the moving device 18 and positioned with respect to the circuit board 2. Next, the suction nozzle 3 is lowered toward the circuit board 2 to mount the electronic component 4 on the circuit board 2.

  The imaging unit 20 is attached to the moving base 18a. Therefore, when the mounting head 16 moves, the image pickup unit 20 also moves together. The imaging unit 20 includes a camera support 22 and a camera 24. The camera support 22 is attached to the moving base 18a. A camera 24 is attached to the camera support 22. The camera 24 is arranged beside the suction nozzle 3 (Y direction in the drawing). The camera 24 includes a camera control device (not shown) that controls the operation of the camera 24. The operation of the camera 24 is controlled by the camera control device.

  The board conveyor 26 is a device that carries the circuit board 2 into the component mounter 1, conveys and positions the component to the component mounting position, and carries out the component mounter 1. The board conveyor 26 of the present embodiment can be configured by, for example, a pair of belt conveyors, a supporting device that is attached to the belt conveyors and supports the circuit board 2 from below, and a driving device that drives the belt conveyors. The circuit board 2 is conveyed in the X direction in the drawing.

  The abnormality detection unit 6 detects an abnormality in the mounter 1. The abnormality of the component mounter 1 referred to in this specification includes all the abnormalities that can occur in the component mounter 1. For example, the suction error of the electronic component 4 by the suction nozzle 3 or the electronic component 4 in the component feeder 12 Various anomalies such as deficiency, failure of the mobile device 18, etc. Therefore, the abnormality detection unit 6 may be configured to detect an abnormality that occurs in the component mounting unit 5 of the component mounting machine 1. The abnormality detection unit 6 may detect all abnormalities that may occur in the mounter 1, or may detect a preset abnormality among these abnormalities. When the abnormality detection unit 6 detects a plurality of abnormalities, a sensor for detecting the abnormality may be provided for each abnormality to be detected. When a plurality of sensors are arranged, they may be arranged at different positions for each abnormality detected by the sensor. The abnormality detection unit 6 is communicably connected to the control device 30, and when detecting an abnormality in the component mounter 1, inputs the detection result to the control device 30.

  The casing 7 houses the component mounting unit 5. The upper portion of the casing 7 has an opening 7a that allows the inside of the casing 7 to be accessed from the outside. The casing 7 includes a feeder holding portion 14, and the component feeder 12 can be attached to and detached from the feeder holding portion 14.

  The opening/closing door 8 is provided in the opening 7 a of the casing 7. The opening/closing door 8 is configured to be switchable between a closed state in which the opening 7a is closed and an open state in which the opening 7a is released. The mechanism for switching the open/close door 8 between the open state and the closed state is not particularly limited, and may be configured to be manually switched by the user, or automatically by the control device 30 driving the actuator. It may be configured to be switched. When the opening/closing door 8 closes the opening 7a, the opening/closing door 8 is switched between the locked state and the unlocked state by the lock mechanism 9 described next.

  The lock mechanism 9 moves the open/close door 8 in a locked state in which the open/close door 8 cannot move at a position where the open/close door 8 closes the opening 7 a of the casing 7 (that is, a state in which the open/close door 8 is locked in the closed state). It is configured to switch to an unlocked state (that is, a state in which the opening/closing door 8 is closed and not locked) that enables it. The lock mechanism 9 is communicably connected to the control device 30 via a signal line (not shown), and switches the open/close door 8 between the locked state and the unlocked state based on an input signal from the control device 30. Various known mechanisms can be used as the lock mechanism 9, and for example, an electromagnetic lock mechanism using a solenoid coil can be used.

  The input device 10 is operated by the user, and a specific instruction for operating the lock mechanism 9 is input. Specifically, the input device 10 is communicatively connected to the control device 30. As will be described later, by inputting a specific instruction to the control device 30 from the input device 10, the control device 30 unlocks the open/close door 8 locked by the lock mechanism 9. That is, when the user inputs a specific instruction to the input device 10, the control device 30 switches the opening/closing door 8 from the locked state to the unlocked state. As shown in FIG. 2, the input device 10 can be configured by an electronic key 32 carried by a user and a reading device 34 that reads the electronic key 32. In this case, the specific instruction input from the input device 10 to the control device 30 is information of the electronic key 32 read by the reading device 34 and the like. As the electronic key 32, for example, a card using RFID can be used. When an RFID card is used as the electronic key 32, the reading device 34 becomes an RFID reader. As the electronic key 32, an ID card or the like storing magnetic information can be used instead of the RFID card. Further, instead of the device configuration using the electronic key 32 and the reading device 34, as the input device 10, an authentication system using personal information such as fingerprint authentication or iris authentication, or a system using a host PC may be used. it can. The reading device 34 may be arranged at any position where the information of the electronic key 32 can be read, and may be arranged outside the casing 7 or inside the casing 7.

  The specific abnormality setting means 11 sets an abnormality (hereinafter, referred to as a specific abnormality) that keeps the opening/closing door 8 in a locked state at the time of abnormality, from among the abnormalities that occur in the mounter 1. That is, the specific abnormality is an abnormality that occurs in the component mounter 1 and requires an on-site storage (maintaining the component mounter 1 in the abnormal state). The user can arbitrarily set the specific abnormality by operating the specific abnormality setting means 11. The number of specific abnormalities set by the specific abnormality setting means 11 may be one or plural. That is, the specific abnormality can be appropriately set according to the user's request. When detecting the specific abnormality set by the specific abnormality setting means 11, the abnormality detection unit 6 inputs the detection result to the control device 30. As the specific abnormality setting means 11, for example, the operation panel 28 can be used, or a host PC can be used.

  The control device 30 includes a computer including a CPU, ROM, and RAM. As shown in FIG. 2, the control device 30 includes a component mounting unit 5 (mounting head 16, moving device 18, imaging unit 20, board conveyor 26), an abnormality detecting unit 6, a lock mechanism 9, and an input device 10. Are communicatively connected. The control device 30, the component mounting unit 5, the abnormality detection unit 6, the lock mechanism 9, and the input device 10 are connected by a signal line (not shown). Using this signal line, the outputs from the abnormality detection unit 6 and the input device 10 are input to the control device 30, and the control signals output from the control device 30 are input to the component mounting unit 5 and the lock mechanism 9. The control device 30 switches the control signal output to the component mounting part 5 and the lock mechanism 9 based on the inputs from the abnormality detection part 6 and the input device 10. As a result, the control device 30 controls the component mounting unit 5 and the lock mechanism 9, stops the component mounting unit 5, and switches between the locked state in which the open/close door 8 is locked in the closed state and the unlocked state in which it is not locked. The signal line connecting the control device 30 and the lock mechanism 9 is located inside the casing 7, and is accessible only when the opening/closing door 8 is in the open state. That is, when the opening/closing door 8 is closed, the signal line connecting the control device 30 and the lock mechanism 9 cannot be accessed. Further, the control device 30 controls each part 16, 18, 20, 26 of the component mounting part 5 to mount the electronic component 4 on the circuit board 2.

  Next, with reference to FIG. 3, a process executed by the component mounter 1 when the open/close door 8 is switched from the locked state to the unlocked state will be described. As a prerequisite for switching the open/close door 8 from the locked state to the unlocked state, the component mounter 1 performs the component mounting process by the component mounting unit 5.

  That is, with the opening/closing door 8 closing the opening 7a of the casing 7, the component mounting unit 5 starts mounting the electronic component 4 on the circuit board 2 (S10). As a result, the component mounter 1 is in a component mounting state in which the electronic component 4 is mounted on the circuit board 2. At this time, the control device 30 operates the lock mechanism 9 to lock the open/close door 8 in the closed state (S12).

  Next, the control device 30 determines whether or not the abnormality detection unit 6 has detected a specific abnormality in the component mounting state (that is, whether or not it is in the specific abnormality detection state) (S14). When it is determined that the specific abnormality is detected (YES in S14), the control device 30 stops the mounting of the electronic component 4 on the circuit board 2 by the component mounting unit 5 and causes the lock mechanism 9 to close the open/close door 8. The locked state is maintained (S16). In addition, when it is not a specific abnormality detection state (NO in S14; for example, when the component mounter 1 is operating normally, or when the component mounter 1 has an abnormality but the abnormality is not a specific abnormality) Etc.) continues the component mounting state and maintains the lock state of the opening/closing door 8 (S12). Unlike the present embodiment, the component mounting state may be stopped even when the specific abnormality detection state is not set. In this case, the locked state of the opening/closing door 8 by the lock mechanism 9 may be released, and the opening/closing door 8 may be opened without using the input device 10.

  Next, the control device 30 determines whether or not a specific instruction is input from the input device 10 in the specific abnormality detection state (in this embodiment, the information of the electronic key 32 is read by the reading device 34 and input to the control device 30. It is determined whether or not) (S18). When the information of the electronic key 32 is input to the reading device 34 (YES in S18), the control device 30 releases the closed state of the open/close door 8 by the lock mechanism 9. Thereby, the opening/closing door 8 can be switched from the closed state to the open state. When it is determined that the specific instruction is not input from the input device 10 (NO in S18), the control device 30 returns to the process of step S16 and maintains the lock state of the opening/closing door 8 by the lock mechanism 9.

  In the component mounter 1 of this embodiment, by managing the input device 10 (person who can input a specific instruction), it is possible to prevent an operator or the like from accidentally opening the open/close door 8. Therefore, it is possible to prevent the operator from arbitrarily repairing the component mounting machine 1 when a specific abnormality that needs to be stored on site occurs, and the site can be reliably stored.

  Further, the signal line connecting the control device 30 and the lock mechanism 9 is located inside the casing 7, and the signal line cannot be accessed when the opening/closing door 8 is closed. For this reason, it is possible to prevent the locked state of the opening/closing door 8 from being unlocked by the operator short-circuiting the signal line. That is, it is possible to prevent the locked state of the opening/closing door 8 by the lock mechanism 9 from being released by an erroneous operation, a malicious operation of an operator, or the like.

  Next, the component mounter of the second embodiment will be described. The component mounter 1 according to the second embodiment is different from the first embodiment in the process of determining whether or not a specific abnormality has occurred. Specifically, the control device 30 determines that a specific abnormality has occurred in the component mounter 1 when the abnormality detected by the abnormality detection unit 6 in a predetermined cycle exceeds a certain frequency. It is configured.

  With reference to FIG. 4, a process executed by the component mounter 1 when the opening/closing door 8 is switched from the locked state to the unlocked state in the component mounter 1 according to the second embodiment will be described. In the second embodiment, the processes of steps S30 and S32 are the same as steps S10 and S12 of the first embodiment.

  Following step S32, the control device 30 determines whether or not the number of abnormalities detected by the abnormality detection unit 6 in the component mounting state exceeds a certain frequency at predetermined intervals (S34). When the control device 30 determines that this abnormality has exceeded a certain frequency (for example, a predetermined set value (the number of times per hour)) within a predetermined cycle (YES in S34), the component mounting machine 1 has a specific abnormality. Is determined to have occurred, and the mounter 1 is determined to be in the specific abnormality detection state (S36). Then, the control device 30 stops the mounting of the electronic component 4 on the circuit board 2 by the component mounting unit 5 and maintains the closed state of the opening/closing door 8 by the lock mechanism 9 (S38). When it is determined that the abnormality that occurs within the predetermined period is less than the certain frequency (NO in S34), the control device 30 returns to the process of step S32, and the component mounting unit 5 transfers the electronic component 4 to the circuit board 2. The mounting is continued and the lock of the open/close door 8 in the closed state is maintained.

  Next, when it is determined that the specific instruction is input from the input device 10 in the specific abnormality detection state (YES in S40), the control device 30 releases the closed state of the opening/closing door 8 by the lock mechanism 9. As a result, the opening/closing door 8 can be switched from the closed state to the open state. When the control device 30 determines that the specific instruction has not been input (NO in S40), the control device 30 returns to the process of step S38 and maintains the closed state of the open/close door 8 by the lock mechanism 9.

  In the component mounter 1 of the present embodiment, the control device 30 measures the frequency of abnormalities that occur every predetermined period. Then, the control device 30 determines that the specific abnormality has occurred when the abnormality that occurs within the predetermined period exceeds a certain frequency. Therefore, although it is an abnormality that does not originally require on-site storage (for example, a suction error of the electronic component 4 due to the suction nozzle 3 or the like), an abnormality that needs to be stored on-site due to chronic occurrence is opened and closed. The door 8 can be maintained in the closed state and locked. With this, the cause of the abnormality can be appropriately specified.

  Although the embodiments of the technology disclosed in the present specification have been described above in detail, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

  The technical elements described in the present specification or the drawings exert technical utility alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Further, the technique illustrated in the present specification or the drawings achieves a plurality of purposes at the same time, and achieving one of the purposes has technical utility.

1: Component mounter 2: Circuit board 3: Suction nozzle 4: Electronic component 5: Component mounter 6: Error detector 7: Casing 7a: Opening 8: Door 9: Lock mechanism 10: Input device 11: Specific error setting Means 12: Component feeder 14: Feeder holder 16: Mounting head 18: Moving device 18a: Moving base 20: Imaging unit 22: Camera support 24: Camera 26: Substrate conveyor 28: Operation panel 30: Control device 32: Electronic key 34: Reader

Claims (5)

A component mounter,
A component mounting part for mounting electronic components on a board,
An abnormality detection unit that detects an abnormality of the component mounter,
A casing having the opening for allowing the component mounting portion to be housed therein and being accessible from the outside,
An opening/closing door provided in the opening of the casing and capable of switching between a closed state in which the opening is closed and an open state in which the opening is released,
A lock mechanism that locks the open/close door in the closed state,
An input device for operating the lock mechanism,
The control device connected to the abnormality detection unit, the lock mechanism, and the input device,
The control device is
In a component mounting state in which the electronic component is mounted on the substrate by the component mounting unit, the opening/closing door is locked in the closed state by the lock mechanism,
In the specific abnormality detection state in which the abnormality detection unit detects a specific abnormality in the component mounting state, the mounting of the electronic component on the board by the component mounting unit is stopped, and the opening/closing door of the opening/closing door is stopped by the lock mechanism. Keep the closed state locked,
In a state where the abnormality detection unit detects an abnormality other than the specific abnormality in the component mounting state, the mounting of the electronic component on the board by the component mounting unit is stopped, and the opening/closing door of the opening/closing door is locked by the lock mechanism. Release the locked state of the closed state,
A component mounter configured to release the closed state of the open/close door by the lock mechanism when a specific instruction is input from the input device in the specific abnormality detection state. Further comprising a specific abnormality setting means operated by a user to set the specific abnormality,
The component mounter according to claim 1, wherein the control device is configured to determine whether or not the specific abnormality has occurred in the component mounter based on a detection result of the abnormality detector. .   The control device is configured to determine that the specific abnormality has occurred in the component mounting machine when the abnormality detected by the abnormality detection unit in a predetermined cycle exceeds a certain frequency. The component mounter according to claim 1 or 2. The input device includes an electronic key and a reading device for reading information of the electronic key,
The control device is configured to release the closed state of the opening/closing door by the lock mechanism when the information of the electronic key is read by the reading device. Component mounter described in. A signal line for connecting the control device and the lock mechanism and further inputting a control signal output from the control device to the lock mechanism,
The control device, by switching the state of the control signal, a lock state in which the lock mechanism locks the open/close door in the closed state, and an unlocked state in which the lock mechanism does not lock the open/close door in the closed state. It is configured to switch to and
The component mounter according to claim 1, wherein the signal line is located inside the casing and is accessible when the opening/closing door is in the open state.

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